diff --git a/src/dialog.c b/src/dialog.c
index fb608e2c..0608f676 100644
--- a/src/dialog.c
+++ b/src/dialog.c
@@ -105,6 +105,9 @@ int wMessageDialog(WScreen *scr, const char *title, const char *message, const c
 
 static void toggleSaveSession(WMWidget *w, void *data)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) data;
+
 	wPreferences.save_session_on_exit = WMGetButtonSelected((WMButton *) w);
 }
 
@@ -715,6 +718,9 @@ static void drawIconProc(WMList * lPtr, int index, Drawable d, char *text, int s
 	RColor color;
 	int x, y, width, height, len;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) index;
+
 	if (!panel->preview)
 		return;
 
@@ -1500,6 +1506,9 @@ static void okButtonCallback(void *self, void *clientData)
 {
 	CrashPanel *panel = (CrashPanel *) clientData;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	panel->done = True;
 }
 
diff --git a/src/dockedapp.c b/src/dockedapp.c
index cc7292fa..19d55bbd 100644
--- a/src/dockedapp.c
+++ b/src/dockedapp.c
@@ -122,6 +122,9 @@ static void chooseIconCallback(WMWidget * self, void *clientData)
 	AppSettingsPanel *panel = (AppSettingsPanel *) clientData;
 	int result;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	panel->choosingIcon = 1;
 
 	WMSetButtonEnabled(panel->browseBtn, False);
diff --git a/src/winspector.c b/src/winspector.c
index 7e1065b3..bd564155 100644
--- a/src/winspector.c
+++ b/src/winspector.c
@@ -813,6 +813,9 @@ static void revertSettings(WMWidget *button, void *client_data)
 	int i, n, workspace, level;
 	char *wm_instance = NULL, *wm_class = NULL;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) button;
+
 	if (panel->instRb && WMGetButtonSelected(panel->instRb) != 0)
 		wm_instance = wwin->wm_instance;
 	else if (panel->clsRb && WMGetButtonSelected(panel->clsRb) != 0)
@@ -1020,6 +1023,9 @@ static void selectWindow(WMWidget *bPtr, void *data)
 	XEvent event;
 	WWindow *iwin;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) bPtr;
+
 	if (XGrabPointer(dpy, scr->root_win, True,
 			 ButtonPressMask, GrabModeAsync, GrabModeAsync, None,
 			 wPreferences.cursor[WCUR_SELECT], CurrentTime) != GrabSuccess) {